BEAM (BM)

Beam is one of a vessel's principal dimensions and plays a critical role in ship design, stability, cargo capacity, and maneuverability. A wider beam generally provides greater transverse stability and allows for increased cargo space, although it may restrict access to certain ports, canals, locks, or berths with width limitations. Together with the vessel's length, draft, and depth, beam is an essential measurement used for ship construction, voyage planning, and port compatibility.